US20170273323A1 - Preservation of meat products - Google Patents

Preservation of meat products Download PDF

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US20170273323A1
US20170273323A1 US15/508,591 US201515508591A US2017273323A1 US 20170273323 A1 US20170273323 A1 US 20170273323A1 US 201515508591 A US201515508591 A US 201515508591A US 2017273323 A1 US2017273323 A1 US 2017273323A1
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Prior art keywords
meat
component
vanillin
cinnamyl
meat product
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US15/508,591
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Inventor
Kumar Saurabh
Eelco Anthonius Johannes Heintz
Geert Pieter SIJTSEMA
Johanna Plijter SCHUDDEMAT
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Purac Biochem BV
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Purac Biochem BV
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Priority to US15/508,591 priority Critical patent/US20170273323A1/en
Assigned to PURAC BIOCHEM B.V. reassignment PURAC BIOCHEM B.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEINTZ, EELCO ANTHONIUS JOHANNES, SCHUDDEMAT, Johanna Plijter, SIJTSEMA, Geert Pieter, SAURABH, KUMAR
Publication of US20170273323A1 publication Critical patent/US20170273323A1/en
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B4/00—General methods for preserving meat, sausages, fish or fish products
    • A23B4/14—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
    • A23B4/18—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of liquids or solids
    • A23B4/20—Organic compounds; Microorganisms; Enzymes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L13/00—Meat products; Meat meal; Preparation or treatment thereof
    • A23L13/40—Meat products; Meat meal; Preparation or treatment thereof containing additives
    • A23L13/42—Additives other than enzymes or microorganisms in meat products or meat meals
    • A23L13/428—Addition of flavours, spices, colours, amino acids or their salts, peptides, vitamins, yeast extract or autolysate, nucleic acid or derivatives, organic acidifying agents or their salts or acidogens, sweeteners, e.g. sugars or sugar alcohols; Addition of alcohol-containing products
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L13/00—Meat products; Meat meal; Preparation or treatment thereof
    • A23L13/50—Poultry products, e.g. poultry sausages
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L17/00—Food-from-the-sea products; Fish products; Fish meal; Fish-egg substitutes; Preparation or treatment thereof
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463—Organic compounds; Microorganisms; Enzymes
    • A23L3/3481—Organic compounds containing oxygen
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463—Organic compounds; Microorganisms; Enzymes
    • A23L3/3481—Organic compounds containing oxygen
    • A23L3/3508—Organic compounds containing oxygen containing carboxyl groups
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463—Organic compounds; Microorganisms; Enzymes
    • A23L3/3481—Organic compounds containing oxygen
    • A23L3/3508—Organic compounds containing oxygen containing carboxyl groups
    • A23L3/3517—Carboxylic acid esters
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs

Definitions

  • the present invention relates to preservation of meat products.
  • new procedures and additives are provided for effective inhibition or prevention of bacterial outgrowth in meat products.
  • Meat spoilage and rancidity is typically caused by unwanted growth of certain aerobic and anaerobic bacteria that contact the meat during processing.
  • the opportunity for bacterial contact with the fresh meat begins when an animal is initially presented for processing and extends up until the time the meat product is consumed.
  • the initial bacterial contact with fresh meat is encountered with a processing facility due to the contaminated state of the animal when it enters the facility.
  • the time between the initial opportunity for bacterial contact with meat products and the ultimate consumption of such products by consumers allows for the proliferation of various forms of bacteria, including the growth of undesired spoilage and pathogenic bacteria.
  • undesired bacteria on meat affects the shelf life thereof.
  • spoilage bacteria such as Pseudomonades, Lactobacillus and Coliforms
  • Some bacteria also act to discolor the surface of the meat.
  • the packaging often inflates due to the generation of gas produced by spoilage bacteria.
  • Contamination of meat with pathogenic bacteria is also a great concern since such bacteria, or toxins produced by such bacteria, can cause illness or disease in humans and animals who consume such meat.
  • many types of bacteria are known to cause food poisoning including: E. coli, Salmonella, Listeria, Staphylococcus, Streptococcus, Bacillus anthraces, Balantidium coli, Campylobacter coli, Campylobacter jejune, Francisella tularensis, Sarcocystis, Taenia saginata, Taenia solium, Toxoplasma gondil, Trichinella spiralis, Yersinia enterocolinea, Yersinia pseudotuberculosis, Brucella, Chlamydia petechia, Leptospira and Clostridium.
  • pathogenic bacteria each group and proliferate under different conditions, any or all of which may be encountered in meat processing.
  • Listeria is generally found in cool, damp environments such as coolers and meat processing areas and is even able to proliferate in and compromise the safety of vacuum packaged meat.
  • Nitrates and nitrites which not only help inactivate bacteria, but also give meat a pink or red color.
  • Nitrate (NO 3 ⁇ ) generally supplied by sodium nitrite or potassium nitrate, is used as a source for nitrite (NO 2 ⁇ ).
  • nitrates in food preservation is controversial. This is due to the potential for the formation of nitrosamines when nitrates are present in high concentrations and the product is cooked at high temperatures.
  • Organic acids such as lactic and acetic acids are frequently used in commercial meat processing plants.
  • Other organic acids have been researched for use in chemical washes as well, including formic, propionic, citric, fumaric, and L-ascorbic acid.
  • the mechanism of action of organic acids on the microbial cell is not completely understood, but it is hypothesised that it is the undissociated molecule of the acid that is responsible for the antimicrobial activity.
  • Organic acids have been shown to be most effective when applied as a warm (50-55° C.) rinse.
  • the USDA has specifically approved lactic acid, acetic acid, and citric acid as antimicrobial agents in the final wash that is applied to livestock carcasses after trimming and inspection but before chilling.
  • There may be issues associated with the use of organic acids however in relation to meat surface discoloration.
  • operators may experience skin/eye irritation when acetic acid is used.
  • the use of acids, especially if applied at higher temperatures also speeds equipment corrosion.
  • the present inventors surprisingly found that the objective of the present invention could be realized with a combination of a vanillin component and a cinnamate component. As is demonstrated in the appending examples, such combinations were effective in preventing bacterial outgrowth in fresh/raw meat samples, compared to untreated control samples and compared to control samples treated with acetic acid. The combinations, more in particular, proved to be effective at levels that do not result in significant effects on the flavor and/or taste of the products.
  • preservative compositions comprising vanillin and cinnamate retarded bacterial growth in all sorts of meat products, including fresh and raw meat products, under various conditions, such as under refrigeration (e.g. at around 4° C.).
  • vanillin and cinnamate can be combined with organic acids, such as acetic acid, lactic acid and/or propionic acid, which gives particularly good results, as can be inferred from the appending examples.
  • organic acids such as acetic acid, lactic acid and/or propionic acid
  • the present inventors furthermore found that treatment of meat products with the combinations of this invention had a favorable effect on the visual appearance (color) of the meat products.
  • the present invention provides the preservative compositions that can be used to extend the shelf-life of meat products, in particular to reduce or prevent bacterial outgrowth and at the same time prevent or reduce discolouration.
  • the use of these preservative systems, the meat products containing them, and methods of treating meat products are also provided.
  • a first aspect of this invention provides a preservative composition comprising (i) a vanillin component and (ii) a cinnamate component.
  • vanillin component refers to the substance vanillin (4-hydroxy-3-methoxybenzaldehyde) and structurally related substances such as, in particular, methyl vanillin, ethyl vanillin, vanillin acetals, vanillyl alcohols, vanillic acid and salts of vanillic acid.
  • the vanillin component is vanillin. Vanillin is approved as a food additive by authorities worldwide. Vanillin was given GRAS status in 1965.
  • the vanillin component may be of natural or synthetic origin. Natural vanillin is typically extracted from the seed pods of Vanilla planifolia. Vanillin and structurally related substances can also be synthesized by processes well-known to those of average skill in the art. Synthetic as well as naturally derived products comprising a vanillin component according to the invention are available commercially.
  • cinnamate component typically refers to the substance cinnamic acid (3-phenyl-2-propenoic acid) and salts thereof, as well as to structurally related substances such as, in particular, cinnamate esters, such as ethyl cinnamate and methyl cinnamate, p-dimethylaminocinnamate, cinnamaldehyde, cinnamyl acetate, cinnamyl alcohol, cinnamyl benzoate, cinnamyl cinnamate, cinnamyl formate, cinnamyl isobutyrate, cinnamyl isovalerate and cinnamyl phenylacetate.
  • cinnamate esters such as ethyl cinnamate and methyl cinnamate, p-dimethylaminocinnamate, cinnamaldehyde, cinnamyl acetate, cinnamyl
  • the cinnamate component is selected from the group consisting of cinnamic acid, cinnamic acid salts and combinations thereof.
  • Cinnamic acid is well known as a food ingredient, which obtained FEMA-GRAS status in 1965.
  • any soluble cinnamic acid salt may be used in accordance with the invention.
  • the cinnamate is a water soluble salt of cinnamic acid.
  • the term ‘cinnamate’ is used herein to refer to any substance containing the cinnamic acid anion, in particular to denote cinnamic acid and the salts thereof.
  • the preservative composition comprises cinnamic acid and/or a cinnamic acid salt selected from the group of sodium cinnamate and potassium cinnamate.
  • the preservative comprises potassium cinnamate.
  • the cinnamate component may be of natural or synthetic origin. From the point of view of consumer acceptance, cinnamate components derived from a natural source are preferable. Cinnamic acid is typically obtained from oil of cinnamon, or from balsams such as storax. It is also found in shea butter. Cinnamate and structurally related compounds can also be synthesized by processes well-known to those of average skill in the art. Synthetic as well as naturally derived products comprising a cinnamate component according to the invention are available commercially.
  • the preservative composition is characterized by a weight ratio of (i) vanillin component to (ii) cinnamate component within the range of 0.05-1.0, more preferably 0.1-0.5, more preferably 0.2-0.4, e.g. around 0.3.
  • the preservative composition is characterized by a molar ratio of (i) vanillin component to (ii) cinnamate component within the range of 0.06-1.2, more preferably 0.12-0.65, more preferably 0.5-0.5, e.g. around 0.36.
  • the combination of (i) vanillin component and (ii) cinnamate component constitutes at least 2.5 wt. % of the preservative composition of this invention, more preferably at least 5 wt. %, at least 7.5 wt. %, at least 10 wt. %, at least 15 wt. %, at least 20 wt. %, or at least 25 wt. % of the preservative composition.
  • the preservative composition may comprise up to 100% of the combination of the vanillin component and cinnamate component.
  • the preservative composition further comprises a carrier system, comprising one or more solid or liquid carrier materials and optionally one or more additives.
  • a liquid preservative composition comprising a solution or dispersion of the above defined components in a liquid carrier system.
  • the liquid preservative composition comprises the vanillin component in an amount of 0.5-35 wt. %, 1-30 wt. %, 1.5-25 wt. %, 2-20 wt. %, 2.5-15 wt %, 3-12.5 wt. %, 3.5-10 wt. %, 4.0-8%, 4.5-7.5% or 5-6 wt. %, based on the total weight of the liquid preservative composition.
  • the preservative composition comprises the cinnamate component in an amount of 1-60 wt.
  • Liquid preservative compositions according to such specifications would be suitable for direct application, although embodiments are envisaged wherein such compositions are further diluted before applying them.
  • a liquid preservative composition comprising a solution or dispersion of the above defined components in a carrier system comprising a mixture of water, an aliphatic 1,2-diol and a food-grade emulsifier.
  • Aliphatic 1,2-diols such as 1,2-propylene glycol and 1,2-butylene glycol, may be included for enhancing the solubility of one or more of the preservative components in water. Additionally, the use of aliphatic 1,2-diols may increase the dispersing quality of the aqueous solution thereby improving the capability of delivering the preservative component into interfibrillar gaps, cuts, etc, in the muscles and tissues of the meat product.
  • the preservative composition comprises 1,2-propylene glycol. 1,2-propylene glycol has the GRAS status and it is used as a humectant (E1520), solvent, and preservative in food products.
  • a food-grade emulsifier may be included in the preservative composition to enhance dispersibility of the preservative components in the meat product.
  • the preservative system comprises a food-grade emulsifier selected from the group consisting of lecithins, mono and diglycerides, diacetyltartaric acid esters of mono- and diglycerides, or sorbitan esters.
  • Preferred food-grade emulsifiers belong to the group of polysorbates, i.e. sorbitan fatty-acid esters.
  • a particularly preferred emulsifier is commercially available under the trade name Tween 80.
  • the liquid preservative composition comprises 20-60 wt. % water, 10-35 wt. %
  • said liquid preservative composition comprises 10-40 wt. %, preferable 15-35 wt. %, most preferably 20-35 wt. % of the preservative components of the invention.
  • the preservative composition is in the form of a free flowing powder or granulate, which may comprise one or more other excipients and/or a carrier material.
  • a free flowing powder is provided consisting essentially of the preservative combination.
  • Such a free flowing powder may be obtained by combining the various components in an aqueous dispersion or solution followed by drying, e.g. spray-drying.
  • a free flowing powder as described herein is provided, comprising the vanillin component in an amount of more than 0.5 wt. %, more than 1 wt. %, more than 1.5 wt. %, more than 2 wt. %, more than 2.5 wt.
  • a free flowing powder as described herein comprising the cinnamate component in an amount of more than 0.5 wt. %, more than 1 wt. %, more than 1.5 wt. %, more than 2 wt. %, more than 2.5 wt. %, more than 3 wt. %, more than 3.5 wt. %, more than 4.0 wt. %, more than 4.5 wt. % or more than 5 wt. %, based on the total weight of the powder composition.
  • the preservative composition of the present invention can optionally include other preservatives.
  • said preservative composition further comprises a component selected from the group of food grade organic acids and salts thereof, particularly from the group consisting of C 2 -C 8 monocarboxylic acids, lactic acid, citric acid and salts thereof.
  • the preservative composition further comprises a lactate component, selected from lactic acid and salts thereof; an acetate component, selected from acetic acid and salts thereof; and/or a propionate component, selected from propionic acid and salts thereof.
  • a liquid preservative composition as described herein comprising said component selected from the group of food grade organic acids and salts thereof, in an amount of 0.25-10 wt. %, 0.5-7.5 wt. %, 0.75-5.0 wt. %, 1.0-4.0 wt. %, 1.25-3.5 wt. %, or 1.5-3.0 wt. %, based on the total weight of the preservative composition.
  • a preservative composition in the form of a dry powder is provided as described herein, comprising said component selected from the group consisting of food grade organic acids and salts thereof, in an amount of 0.5-25 wt. %, 1-20 wt. %, 2.5-15 wt. %, 5.0-10.0 wt. %, or 6-8 wt. %, based on the total weight of the preservative composition.
  • the preservative composition comprises a non-neutralized, partly neutralized or completely neutralized vinegar.
  • vinegar is used to denote the liquid obtained by the acetous fermentation of an alcoholic liquid, containing at least 4 grams of acetic acid per 100 ml, in particular a vinegar that can be declared ‘natural’, e.g. in terms of the FDA guidelines. According to said guidelines “natural” means minimally processed and containing no synthetic ingredients or processing aids (cf. Food Labeling: Nutrient Content Claims General Principles, Petitions, Definitions of Terms, 56 Fed. Reg. at 60,466).
  • the preservative composition comprises a non-neutralized, partly neutralized or completely neutralized vinegar selected from the group consisting of white vinegar, brandy vinegar, alcoholic vinegar, balsamic vinegar, wine vinegar, malt vinegar, beer vinegar, potato vinegar, rice vinegar, apple vinegar, cherry vinegar, and cane vinegar.
  • the vinegar is cane vinegar.
  • the acetic acid content of the vinegar is at least 5% (w/w), more preferably at least 7.5% (w/w), even more preferably at least 10% (w/w). It is also possible to make use of vinegar that has been pre-concentrated to a certain extent.
  • Such products are commercially available and typically have an acetic acid content between 20 and 30% (w/w).
  • the acetic acid content of the vinegar is at least 20% (w/w), more preferably at least 25% (w/w), e.g. about 29 or 30% (w/w).
  • a common measure for indicating the acetic acid content of vinegar is the grain strength.
  • the grain strength is the acetic acid content expressed in g/l, so 50 grain vinegar is about 5% (w/w) acetic acid.
  • the vinegar is at least 200 grain, more preferably at least 250 grain.
  • commercial food-grade vinegars are offered at 200 grain and 300 grain. In one preferred embodiment of the invention, a 300 grain vinegar is used.
  • the preservative comprises a lactate component, preferably selected from the group consisting of lactic acid, sodium lactate, calcium lactate, potassium lactate and mixtures thereof.
  • the preservative composition comprises a fermentation product, typically a non-neutralized, partly neutralized or completely neutralized lactic acid ferment, in an amount sufficient to provide levels of the lactate component as mentioned here before.
  • the preservative comprises a propionate component, preferably selected from the group consisting of propionic acid, sodium propionate, calcium propionate, potassium propionate and mixtures thereof.
  • the preservative composition comprises a fermentation product, typically a non-neutralized, partly neutralized or completely neutralized propionic acid ferment, in an amount sufficient to provide levels of the lactate component as mentioned here before.
  • Fermentation products typically are crude or partially purified/clarified ferments. Such fermentation products have favorable organoleptic profiles, which contribute positively to the taste and flavour characteristics of food products to which they are added. Moreover, such fermentation products will provide additional benefits with regard to labeling and regulatory aspects. Fermentation products, in accordance with the invention are obtainable by fermentation of a fermentable substrate with a suitable microorganism, in this case a lactic acid and/or propionic acid producing microorganism, resulting in a composition typically comprising, besides the lactic acid or propionic acid component, traces of the fermentable substrate, other substances produced by the microorganism, and traces of the microorganism itself, e.g. cellular debris and/or cellular components.
  • a suitable microorganism in this case a lactic acid and/or propionic acid producing microorganism
  • the lactic acid and/or propionic acid producing micro-organisms may also produce other preservative compounds such as nisin or other bacteriocins, acetic acid, succinic acid, etc.
  • a liquid fermentation product is distinguishable from e.g. highly purified products. The term however does not exclude products which have been subjected to some form of purification/clarification and/or concentration.
  • the fermentation product is the supernatant obtainable by fermentation of a fermentable substrate with a lactic acid or propionic acid producing microorganism followed by separating supernatant from (wet) biomass and other solid particles.
  • the fermentation product is a concentrated supernatant obtainable by fermentation of a fermentable substrate with a lactic acid or propionic acid producing microorganism followed by separating supernatant from (wet) biomass and other solid particles and concentrating the supernatant.
  • the fermentation product is a partially purified and optionally concentrated supernatant obtainable by fermentation of a fermentable substrate with a lactic acid or propionic acid producing microorganism followed by separation of supernatant from (wet) biomass and other solid particles, purification of the supernatant and, optionally, concentration of the supernatant, with the proviso that the purification does not result in a level of the lactate component or propionate component of more than 97 wt. % on a dry solids weight basis, preferably it does not result in a level of the lactate component or propionate component of more than 96 wt. % on a dry solids weight basis, most preferably it does not result in a level of the lactate component of more than 95 wt. % on a dry solids weight basis.
  • the fermentation product comprises other dispersed or dissolved solids besides the lactate or propionate component.
  • Typical examples of such other dispersed or dissolved solids include sugars, such as lactose, glucose and sucrose; other organic acids and/or salts thereof, such as citric acid, pyruvic acid, malic acid, succinic acid, formic acid and acetic acid; nitrogen containing substances, such as amino acids, peptides and proteins; nucleic acid components such as DNA and RNA fragments, nucleotides and nucleosides; cell membrane phospholipids; vitamins; trace elements; and pigments.
  • sugars such as lactose, glucose and sucrose
  • other organic acids and/or salts thereof such as citric acid, pyruvic acid, malic acid, succinic acid, formic acid and acetic acid
  • nitrogen containing substances such as amino acids, peptides and proteins
  • nucleic acid components such as DNA and RNA fragments, nucleotides and nucleosides
  • the liquid fermentation product comprises at least one, at least two, at least three, at least four or at least five components selected from the group consisting of lactose, glucose, sucrose, citric acid and salts thereof, pyruvic acid and salts thereof, malic acid and salts thereof, succinic acid and salts thereof, formic acid and salts thereof, acetic acid and salts thereof, amino acids, peptides and proteins.
  • the liquid fermentation product comprises at least 0.5 wt. % on a dry solids weight basis, preferably at least 1 wt. %, more preferably at least 2 wt.
  • the preservative composition of the present invention typically contains no or only minor amounts of additional preservative agents, such as, in particular, benzoate and/or sorbate.
  • the preservative composition contains less than 1 wt. % of preservative agents selected from the group consisting of sorbates and benzoates, preferably less than 0.5 wt. %, preferably less than 0.1 wt. %.
  • the preservative composition is essentially or completely free from preservative agents selected from the group of benzoates and sorbates.
  • a second aspect of the invention concerns a method of treating a meat product, said method comprising contacting the meat product with an effective amount of (i) vanillin and/or a derivative thereof and (ii) a cinnamate component selected from cinnamic acid, salts thereof and/or derivatives thereof, preferably an effective amount of the preservative composition as described herein before.
  • a bactericidal and/or bacteriostatic effect encompasses killing bacteria slowing or as well as arresting the outgrowth of bacteria in meat products, ultimately resulting in enhanced shelf-life thereof, regardless of the precise mechanism underlying such effects.
  • the bactericidal or bacteriostatic effect is in respect of bacteria known to spoil meat products kept under conditions of refrigeration, as defined herein elsewhere.
  • the bactericidal or bacteriostatic effect is in respect of groups of bacteria and/or one or more species of bacteria selected from Enterobacteriaceae, lactic acid bacteria, Clostridium spp., Salmonella spp., Listeria spp., Bacillus spp., Staphylococcus spp., E.
  • the bactericidal or bacteriostatic effect is in respect of at least two, most preferably at least three of the aforementioned species of bacteria.
  • the treatment of the present invention at the same time proved to be highly effective in preserving an attractive visual appearance of the meat product, in particular preserving the color of the meat product and/or in preventing discoloration of the meat product.
  • the method of the present invention is performed with the aim of accomplishing one/or more of the following improvements:
  • the method comprises applying the vanillin component and cinnamate component and other optional components, preferably in the form of the preservative compositions as defined herein, especially a liquid preservative composition, to the surface of the meat product in an effective amount.
  • a method as defined herein is provided, wherein following application of the preservative composition to the surface of the meat product, e.g. by dipping or spraying, said meat product is subjected to treatment resulting in complete or partial removal of the preservative components from the surface of the meat product.
  • the present inventors have established that such treatment is effective to accomplish one or more of the above objectives.
  • Embodiments are of course also envisaged where the preservative components are not removed from the meat after surface treatment.
  • the step of applying the preservative components of this invention is followed by packaging the meat product.
  • the method comprises applying a liquid preservative composition as defined herein and optionally further treating the meat product, in a manner resulting in an amount of 0.5-5 g of the liquid preservative composition remaining per kg of meat in the final product.
  • said amount of the liquid preservative product remaining in/on the meat can be determined in a straight-forward manner by weighing the meat before and after the treatment. Said amount (in wt. %) is also referred to herein as the ‘uptake’.
  • the method comprises incorporating the vanillin component and cinnamate component and other optional components, preferably in the form of the preservative compositions as defined herein, in the meat product in an effective amount.
  • the vanillin component and cinnamate component and other optional components preferably in the form of the preservative compositions as defined herein, are blended with a ground meat product.
  • the vanillin component and cinnamate component and other optional components preferably in the form of the preservative compositions as defined herein, may be incorporated in the meat product by injection.
  • the vanillin component and cinnamate component and other optional components preferably in the form of the preservative compositions as defined herein, is incorporated in a marinade composition that is applied on the meat product.
  • the preservative components of the invention may thus be used as an ingredient of a meat product.
  • the term ‘effective amount’ refers to an amount sufficient to achieve one or more of the above described bacteriostatic and/or bactericidal effects in the meat product to which the present preservative composition is added. There are no standard parameters to define any of the above effects.
  • a preservative composition is considered bacteriostatic and/or bactericidal if an effect can be shown in direct comparison with a suitable control, typically an otherwise similar meat product that has not undergone the treatment of the present invention.
  • the method comprises applying the vanillin component at a level of more than 50 ppm, preferably more than 100 ppm, preferably more than 200 ppm, preferably more than 300 ppm, preferably more than 350 ppm, preferably more than 400 ppm. In one preferred embodiment, the method comprises using the vanillin component at a level of less than 1000 ppm, preferably less than 700 ppm, preferably less than 600 ppm, preferably less than 500 ppm, preferably less than 450 ppm. The levels as defined here are based on the application of vanillin.
  • the levels expressed herein in ppm may be adjusted to compensate for any difference in molecular weight so as to arrive exactly at a corresponding molar amount.
  • the vanillin component is applied at a level equivalent to a vanillin level within the above specified ranges.
  • the method comprises applying the cinnamate component at a level of more than 500 ppm, preferably more than 750 ppm, preferably more than 1000 ppm, preferably more than 1250 ppm, preferably more than 1350 ppm. In one preferred embodiment, the method comprises applying the cinnamate component at a level of less than 5000 ppm, preferably less than 3000 ppm, preferably less than 2000 ppm, preferably less than 1500 ppm. The levels as defined here are based on the application of potassium cinnamate.
  • the levels expressed herein in ppm may be adjusted to compensate for any difference in molecular weight so as to arrive exactly at a corresponding molar amount.
  • the cinnamate component is applied at a level equivalent to a potassium cinnamate level within the above specified ranges.
  • the method comprises applying the component selected from the group consisting of food grade organic acids and salts thereof, as defined herein before, at a level of more than 10 ppm, preferably more than 25 ppm, preferably more than 50 ppm, preferably more than 75 ppm, preferably more than 100 ppm, preferably more than 125 ppm.
  • the method comprises using the said component at a level of less than 1000 ppm, preferably less than 750 ppm, preferably less than 500 ppm, preferably less than 400 ppm, preferably less than 300 ppm.
  • the method comprises applying less than 250 ppm of preservative agents selected from the group of sorbates and benzoates, preferably less than 200 ppm, more preferably less than 100 ppm, more preferably less than 50 ppm, more preferably less than 10 ppm, more preferably less than 1 ppm and most preferably less than 0.5 ppm. This ensures that no negative taste effects are observed.
  • the method does not comprise applying preservative agents selected from the group of benzoates and sorbates.
  • the present preservative composition is particularly suited, and intended, for application in meat products.
  • the term “meat” has typically been used to refer to the muscular flesh of animal species living on land, i.e. to the exclusion of aquatic and avian animal species. The term is often considered to additionally refer to other edible tissues, such as offal, of said animal species. In more recent times, the term ‘meat’ is more casually used in the sense of animal species in general, i.e. as including also avian and aquatic species. For ease of reference, in the context of this invention, the edible parts of (land) animals, fish, poultry crustaceans and shellfish are all referred to as ‘meat’.
  • foultry meat refers to the edible tissue of poultry and, as such, these terms can be interchanged without changing the scope of the invention in any way.
  • fish meat similarly refers to (and is interchangeable with) the edible tissue of fish, etc.
  • the meat can be obtained from any species generally used in the food industry, including livestock species such as cattle (beef), pigs (porc), sheep/lamb, deer, etc.; avian species such as chicken, turkey, etc.; and aquatic species such as salmon, catfish, trout, flounder, haddock, cod, mackerel, tuna, swordfish, shark, squid, clams, scallops, mussels, oysters, abalone, lobster, shrimp, crabs, crayfish, etc.
  • livestock species such as cattle (beef), pigs (porc), sheep/lamb, deer, etc.
  • avian species such as chicken, turkey, etc.
  • aquatic species such as salmon, catfish, trout, flounder, haddock, cod, mackerel, tuna, swordfish, shark, squid, clams, scallops, mussels, oysters, abalone, lobster, shrimp, crabs, crayfish, etc.
  • the meat product preferably comprises at least 80 wt. % of said fish, crustacean, shellfish, poultry or animal meat, more preferably at least 90 wt. %, more preferably at least 95 wt. %, more preferably at least 97 wt. %, more preferably at least 98 wt. %, more preferably at least 99 wt. %, most preferably at least 99.5 wt. %.
  • the meat product consists substantially or entirely of fish, crustacean, poultry or animal meat.
  • processed meat typically is used to refer to meat products, the preparation of which involves processing steps in addition to merely skinning the carcass, dismembering the carcass and/or boning of the meat.
  • Processed meat and poultry products are a very broad category of many different types of products all defined by having undergone at least one further processing or preparation step such as grinding, adding an ingredient, subjecting to heat-treatment, smoking, fermenting, drying, etc. Such treatment significantly change the appearance, texture and/or taste of the meat.
  • Some processed meat products are ready-to-cook, other processed meat and poultry are ready-to-eat.
  • Processed meat products include, for example, whole hams, whole or partial turkey breasts, fish cakes, fish fillets, smoked fish, surimi, delicatessen-style meat products, such as for example, baked ham, boiled ham, roasted turkey breast, roast beef, corned beef, pastrami, bologna, capicola, mortadella, salami, chicken loaf, chicken roll, turkey loaf, turkey roll, hot dogs, frankfurter, sausage, cooked ham, cooked chicken, cooked turkey, cured ham, cured sausage, etc.
  • delicatessen-style meat products such as for example, baked ham, boiled ham, roasted turkey breast, roast beef, corned beef, pastrami, bologna, capicola, mortadella, salami, chicken loaf, chicken roll, turkey loaf, turkey roll, hot dogs, frankfurter, sausage, cooked ham, cooked chicken, cooked turkey, cured ham, cured sausage, etc.
  • the meat product is a fresh or non-processed meat product, preferably a fresh or non-processed meat product selected from the group consisting of animal carcasses, animal carcass parts, fresh or raw cut meat pieces, raw ground meat, raw ground meat products, etc.
  • the meat product is a fresh processed meat product, typically obtained by mixing finely comminuted, minced or sliced muscle meat, with one or more additional ingredients, such as animal fat, common salt, spices, binders, fillers, etc.
  • the meat product is a fresh processed meat product selected from the group consisting of sausage, patties, hamburgers, kebab, etc.
  • the meat product is a cooked meat product.
  • the production of ‘cooked meat products’ involves heating raw meat or pre-cooked meat, optionally after mixing with one or more additional ingredients , such as animal fat, common salt, spices, binders, fillers, etc., at pasteurization or sterilization temperatures.
  • the meat product is a raw-cooked meat product selected from the group consisting of cooked ham, cooked chicken, cooked turkey, etc.
  • the meat product preferably possesses a specified range of water activities (Aw) similar to that of fresh meat, typically of above 0.90.
  • the meat product has a water activity above 0.92, above 0.94, above 0.95, above 0,96 or above 0.97.
  • fresh and/or raw meat products according to the present invention will typically have a moisture content of at least 30 wt. %, more preferably at least 50 wt. %, more preferably at least 65 wt. %, more preferably at least 80 wt. %.
  • fresh and/or raw meat products according to the present invention will typically have a moisture to protein (M:P) ratio of at least 3, more preferably at least 3.25, more preferably at least 3.5, most preferably at least 3.75.
  • M:P moisture to protein
  • Meat products according to the present invention will typically have a salt content corresponding to that of fresh meat and, in particular, below the range of pickled (or cured) meat.
  • the meat product of the invention has a salt content below 3 wt. %, based on total weight of the meat product.
  • the meat product has a salt content within the range of 0.001-2.5 wt. %, more preferably 0.01-2.0 wt. %, more preferably 0.1-1.5 wt. %, most preferably 0.2-1.0 wt. %.
  • the meat product has a NaCl content within the range of 0.001-2.5 wt.
  • the fresh and/or raw meat product will not comprise any added NaCl at all.
  • Meat products according to the present invention will possess a specified range of acidity, especially a pH of above 5.
  • the pH is at least 5.2, preferably at least 5.3, preferably at least 5.4, preferably at least 5.5, preferably at least 5.6.
  • the pH of the meat product is below 8, preferably below 7.5, preferably below 7.0.
  • the pH values as recited here concern the untreated meat product.
  • the method of the invention may involve treatment of the meat product with certain acidic components, which may change the pH value of the meat product to a value outside the ranges specified here.
  • the present method results in a bactericidal or bacteriostatic effect and this is particularly useful for meat products that are kept in a refrigerated (rather than a frozen) state.
  • the meat product, following treatment according to the invention is not brought in a frozen state.
  • the meat product, following treatment according to the invention is kept or stored under refrigeration or at ambient temperature.
  • the meat product is kept or stored at a temperature of above 0° C., preferably within the range of 0-10° C., more preferably within the range of 3-8° C.
  • the meat product is contained within a space kept at a temperature within the range of 0-10° C., preferably within the range of 3-8° C., such as in a refrigerator.
  • the method comprises packaging the meat product, following the treatment with the preservatives of this invention, in a package containing instructions to store the packaged meat product in a refrigerator, preferably at a temperature within the range of 0-10° C., preferably within the range of 3-8° C.
  • An aspect of the invention is directed to the meat products obtainable by the methods of this invention.
  • the meat products benefit from the treatment with the vanillin and cinnamate components and optional further preservative components, or a preservative system of the invention, in that it enhances the shelf-life.
  • a treated fresh meat product preferably is characterized by having a shelf-life of at least 10 days, preferably at least 20 days, most preferably at least 25 days.
  • the shelf-life is defined as the amount of time a product remains acceptable for organoleptic, nutritional, and/or safety purposes, for the consumer or the retailer, after production, when appropriately stored, preferably when stored under refrigeration, preferably at a temperature within the range of 0-10° C., preferably within the range of 3-8° C.
  • Another aspect of the invention concerns the use of the vanillin and cinnamate components and optional further preservative components, or a preservative system of the invention, for use as a meat preservative and/or for use in the preservation of meat.
  • Another aspect of the invention concerns the use of the vanillin and cinnamate components and optional further preservative components, or a preservative system of the invention, for use as a meat ingredient and/or for use as an ingredient in meat processing.
  • Another aspect of the invention concerns the use of the vanillin and cinnamate components and optional further preservative components, or a preservative system of the invention, for use as a meat surface treatment agent and/or for use in surface treatment in meat processing.
  • the invention concerns the use of the vanillin and cinnamate components and optional further preservative components, or a preservative system of the invention, for
  • the bacteriostatic and/or bactericidal effects referred to above are in respect of bacteria known to spoil meat products kept under conditions of refrigeration, as defined herein elsewhere.
  • the bactericidal or bacteriostatic effect is in respect of groups of bacteria and/or one or more species of bacteria selected from Enterobacteriaceae, lactic acid bacteria, Clostridium spp., Salmonella spp., Listeria spp., Bacillus spp., Staphylococcus spp., E.
  • the bactericidal or bacteriostatic effect is in respect of at least two, most preferably at least three of the aforementioned species of bacteria.
  • a preservative solution was prepared by mixing potassium cinnamate (PuraQ AX66, commercially available from Corbion/Purac) and vanillin (Rhovanil Extra Pure Vanillin, commercially available from Rhodia) as preservatives in a solution of propylene glycol (PG) and Tween 80 (emulsifying agent) in water in the following relative amounts: 22.5 wt. % Kcin, 22.5 wt. % PG, 6.7 wt. % vanillin, 5.6 wt. % Tween 80 and 42.7 wt. % water (demineralized).
  • the preservative solution was heated for 10-15 min at 60° C. prior to use. The preservative solution was continuously stirred until use in order to prevent sedimentation.
  • Spare ribs were obtained from a local butcher.
  • the spare ribs were defrosted for 1.5 days in a fridge at 0° C. and if necessary additionally defrosted at 10° C. on a sterile table. After defrosting, the spare ribs were cut into pieces with 3 ribs (bones) each and stored in a disinfected bin. Spare ribs were mixed manually using sterile gloves before treatment with the preservative solution in order to spread the bacterial load uniformly over the surface of all ribs.
  • the preservative solution was prepared as described herein before and was continuously stirred until use in order to prevent sedimentation.
  • the uptake of preservative solution by the spare ribs during the dipping treatment was assessed by measuring the weight of 10 ribs before treatment and after treatment and calculating the relative weight increase as compared to the initial weight.
  • Triplicate samples of treated spare ribs were tested against an untreated control consisting of untreated spare ribs by microbiologic analysis at appropriate intervals of time. Of each sample, 3 areas of 10 cm 2 were swabbed and the swab was diluted in 10 ml sterile buffered peptone water. Where appropriate, additional dilutions were also made with the same sterile diluent.
  • TSA Tryptone Soya Agar
  • a 50 ⁇ l portion of the appropriate dilution for each sample was plated onto Tryptone Soya Agar (abbreviated as TSA, Oxoid) for total aerobic plate count (APC), MRS medium (Oxoid) for Lactic acid bacteria (micro aerophilic) and VRBG medium (Oxoid) for Enterobacteriaceae using a spiral plater (Eddyjet type 1.23, IUL Instruments, Barcelona, Spain). Plates were incubated for 48 hrs at 30° C. for TSA and MRS medium or for 48 hrs at 37° C. for VRBG medium. Colonies were counted using an automatic colony counter (Colyte Supercount, Synoptics, Cambridge, UK). Results were expressed as the logarithm of the number of colony forming units (CFU)/cm 2 .
  • CFU colony forming units
  • the uptake of preservative solution by the spare ribs during the dipping treatment was found to be 0.6 wt. %.
  • a dry blend was prepared consisting of 72.36 wt. % of potassium cinnamate (PuraQ AX66, commercially available from Corbion/Purac) 21.56 wt. % vanillin (Rhovanil Extra Pure Vanillin, commercially available from Rhodia) and 6.08 wt. % of a powdered vinegar product with 66% of acetic acid equivalents (Verdad Powder N6 commercially available from Corbion/Puurac). From this dry blend, a liquid composition was prepared by combining 276.4 g of dry blend with water up to a total weight of 1 kg. This liquid composition is referred to as the 100% dosage. Lower dosages of 75%, 50% and 25% were also prepared by adjusting the ratio of dry blend to water accordingly. the liquid compositions were heated prior to use.
  • a preservative solution comprising Verdad N9 was used. This is a concentrated vinegar product containing 31 wt. % of acetic acid equivalents and is marketed by Corbion Purac.
  • the reference preservative solution was prepared by mixing 750 g Verdad N9 with water up to a total weight of 1 kg.
  • Spare ribs were obtained from a local butcher.
  • the spare ribs were defrosted for 1.5 days in a fridge at 0° C. and if necessary additionally defrosted at 10° C. on a sterile table. After defrosting, the spare ribs were cut into pieces with 3 ribs (bones) each and stored in a disinfected bin. Spare ribs were mixed manually using sterile gloves before treatment with the different preservative solutions in order to spread the bacterial load uniformly over the surface of all ribs. The preservative solutions were prepared as described herein before and were continuously stirred until use in order to prevent sedimentation.
  • the uptake of preservative solution by the spare ribs during the dipping treatment was assessed by measuring the weight of 10 ribs before treatment and after treatment and calculating the relative weight increase as compared to the initial weight.
  • Duplicate samples of treated spare ribs were microbiologically analyzed at appropriate time intervals. Each sample was placed manually into a stomacher bag and sterile diluent (8.5% w/w sodium chloride and 0.1% w/v bacteriological peptone) was added in a ratio of 1:1 (meat:diluent) and homogenized for 60 s by hand. Where appropriate, additional dilutions were also made with the same sterile diluent.
  • a 50 ⁇ l portion of the appropriate dilution for each sample was plated onto Tryptone Soya Agar (Oxoid) for total aerobic plate count (APC), MRS medium (Oxoid) for Lactic acid bacteria and VRBG medium (Oxoid) for Enterobacteriaceae using a spiral plater (Eddyjet type 1.23, IUL Instruments, Barcelona, Spain). Plates were incubated for 48 hrs at 30° C. for TSA and MRS (micro aerophilic) medium or for 48 hrs at 37° C. for VRBG medium. Colonies were counted using an automatic colony counter (Colyte Supercount, Synoptics, Cambridge, UK).
  • FIGS. 1, 2 and 3 respectively show the Aerobic plate counts (APC), the lactic acid bacteria counts and the Enterobacteriaceae (VRBG) counts as a function of time for the different preservative solutions as well as for the control.
  • APC Aerobic plate counts
  • VRBG Enterobacteriaceae

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NL2026011B1 (en) * 2020-07-07 2022-03-11 Niacet B V Use of a preservative combination for reducing growth of gram negative bacteria in or on a meat product

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